Overview

overview

10

Static

static

10

2026-10-26...ry.exe

windows10-2004-x64

10

2026-10-26...ry.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    147s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    27/10/2026, 02:20

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General

  • Target
    2026-10-26_f3e771431cc58fe34d0adf91eadb3fa7_coinminer_elex_wannacry.exe
  • Size 2.8MB
  • Sample261027-csj9bace27
  • SHA256 ef793b2f6a6afec8fc768eb82985077d127d710ba3d61aa1141c948f964ca84c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoveryexecutioncosmupersistenceprivilege_escalationupxworm

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

    wormcosmu
  • Detects Cosmu payload 3 IoCs

    Cosmu is a worm written in C++.

  • UPX dump on OEP (original entry point) 2 IoCs
  • Creates a file in the Startup directory 1 TTPs 1 IoCs

    A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    persistenceprivilege_escalation
  • Suspicious use of SetThreadContext 1 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-10-26_f3e771431cc58fe34d0adf91eadb3fa7_coinminer_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-26_f3e771431cc58fe34d0adf91eadb3fa7_coinminer_elex_wannacry.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4140
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c echo on error resume next:CreateObject("WScript.Shell").Run "C:\Users\Admin\AppData\Local\Temp\2026-10-26_f3e771431cc58fe34d0adf91eadb3fa7_coinminer_elex_wannacry.exe",1: >"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\x.vbs"
      2⤵
      • Creates a file in the Startup directory
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:5880
    • C:\Users\Admin\AppData\Local\Temp\2026-10-26_f3e771431cc58fe34d0adf91eadb3fa7_coinminer_elex_wannacry.exe
      C:\Users\Admin\AppData\Local\Temp\2026-10-26_f3e771431cc58fe34d0adf91eadb3fa7_coinminer_elex_wannacry.exe
      2⤵
        PID:4932
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:5572

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            memory/4140-0-0x0000000000400000-0x000000000046E000-memory.dmp
            Download

            memory/4140-1-0x000000000040C000-0x000000000040D000-memory.dmp
            Download

            memory/4140-6-0x0000000000400000-0x000000000046E000-memory.dmp
            Download

            memory/4932-3-0x0000000000400000-0x0000000000658000-memory.dmp
            Download

            memory/4932-4-0x0000000000400000-0x0000000000658000-memory.dmp
            Download

            memory/4932-5-0x0000000000400000-0x0000000000478000-memory.dmp
            Download